I don't think anyone will argue that Castlevania was getting stale. Iga had great enthusiasm for the series but the fact is the entries were getting pretty uninspired. The series never really found its "Next Big Thing" breakthrough after Symphony. While I didn't really like Lords of Shadow, I can respect that they were trying to do something different. It just didn't turn out to be a different that did anything for me.
I'm still willing to give LoS 2 a chance, though.
I mean this with respect.
Once we get the current big thing, why would we need the next?
SotN was indeed the big thing in Castlevania, and it was OK for me if they just remade that game over and over with different characters, songs and stages each time.
And it's one thing to try something different (a little different) and other completely different thing to get rid of everything and make a new game with everything new. New look, new music, new design, new storyline, everything.
It's like if Nintendo finally makes a new Metroid, but instead of a Metroid it's just a Zelda, where the princess is named Samus, and instead of a Zelda world it's some random planet in space.
Almost everyone will like it, except Metroid lifelong fans.
And I really don't care if future games take place in the canon timeline or not. I just want them to have the same aesthetic and music, be it from older games and that horror atmosphere, or the newer ones with more anime inclined look.